LM2990 Datasheet PDF - National Semiconductor Negative Low Dropout Regulator Specs

LM2990 - Negative Low Dropout Regulator

This page provides the datasheet information for the LM2990, a member of the LM2 Negative Low Dropout Regulator family.

Datasheet Summary

Description

The LM2990 is a three-terminal, low dropout, 1 ampere negative voltage regulator available with fixed output voltages of 5, 5.2, 12, and

15V.

The LM2990 uses new circuit design techniques to provide low dropout and low quiescent current.

Features

n n n n n n n 5% output accuracy over entire operating range Output current in excess of 1A Dropout voltage typically 0.6V at 1A load Low quiescent current Internal short circuit current limit Internal thermal shutdown with hysteresis Functional complement to the LM2940 series.

Datasheet Details

Part number	LM2990
Manufacturer	National Semiconductor
File Size	421.07 KB
Description	Negative Low Dropout Regulator
Datasheet	LM2990 Datasheet
Additional preview pages of the LM2990 datasheet.

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Full PDF Text Transcription

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LM2990 Negative Low Dropout Regulator June 1999 LM2990 Negative Low Dropout Regulator General Description The LM2990 is a three-terminal, low dropout, 1 ampere negative voltage regulator available with fixed output voltages of −5, −5.2, −12, and −15V. The LM2990 uses new circuit design techniques to provide low dropout and low quiescent current. The dropout voltage at 1A load current is typically 0.6V and a guaranteed worst-case maximum of 1V over the entire operating temperature range. The quiescent current is typically 1 mA with 1A load current and an input-output voltage differential greater than 3V. A unique circuit design of the internal bias supply limits the quiescent current to only 9 mA (typical) when the regulator is in the dropout mode (VOUT − VIN ≤ 3V).

Published: Mar 22, 2005 |